They may be BPA free but that doesn't mean they don't leach other hormone disrupting chemicals. https://www.abc.net.au/science/articles/2009/04/29/2555698.htm If you are looking for a truly inert vessel for water glass is probably your only choice. Other than that it's choose the lesser of many evils.

I have a metal bottle that weighs 5oz and BPA free. Heavier than a smartwater, but more durable and water stays clean and tasty.

They're supposedly BPA free.

https://www.drinksmartwater.com/faqs/

Titanium water bottles are great. Not many lightweight options available in 1 liter+ sizes though.

If it doesn't have some coating/lining-epoxy or plastic and is made from a pure titanium I would say yes.

It is, yes. Non-alloyed titanium is the most biocompatible metal available. Nothing leaches or interacts with what it contains. I haven't seen any coated titanium so you should be okay with any you find. They all come from one of three factories/companies anyway.

I use a copper water bottle.

If it makes you feel better awesome for you. There is no evidence any of the EDCs found in plastics are bioactive in humans, they are certainly a problem for fish and birds (good enough reason to avoid them) but like phytoestrogens looking similar to doesn't mean they actually do anything to receptors in the human body. We have been living with them for so long now (about 150 years) negative health effects are certainly small or they would be detectable.

It's probable a small number are bioactive. It's unlikely we will know in the foreseeable future which ones; modeling of proteins is simply not advanced enough to even point in the direction of the more likely candidates.

All plastics leech EDCs. More thermally stable plastics do so less when heated. Reducing your plastic (particularly single use) usage is awesome ecologically and should absolutely be encouraged, the amount you can actually manage your exposure to EDCs and microplastics is nearly zero so it shouldn't be something that gives you anxiety. They are in all food, air and water. We are talking about potential health effects that are lower from nearly anything you will see suggested from any nutrition & health body. There are real meaningful changes that can optimize your nutrition & health, focus your brain on those things.

Reverse Osmosis system

You do you, anyone reading tap water is fine. If you don't like the taste, get a fridge or under sink cartridge filter (Brita etc).

Stainless steel, ceramic coated, glass

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I got a under sink 5-year water filter off Amazon and a couple stainless steel bottles from Costco, simple and effective.

if you want spill proof, it’s gonna have a gasket and even tho most of it is ok for the dishwasher, you have to thoroughly hand clean those pieces and mouth pieces…. things won’t mold so long as they’re washed properly. Kleen lantern and hydro flask or lowest maintenance but I do prefer owala.

The new hydroflasks are dishwasher safe.

You still need to pull the gasket from the lid occasionally, but if you only use the bottle for water and let everything air dry after a run through the dishwasher, not very often.

I like my owala! It has a straw and keeps ice for over 24 hours even when sitting in the sun

I love my yeti, but I also love my water to be cold and it keeps ice well.

Nalgene.

Stainless steel is the healthiest of the three. They're not very heavy either.

BPA isn't the only harmful thing leeching from plastics.

Any recommendations for a glass water bottle?

Stainless.

Glass is the best option in terms of potential health toxicity.

Stainless steel. I use Stanley but it’s up to you! Plus durability, stainless steel will handle drops and dings. I have a old one and it’s so beat up but it tells a story

I personally love my Owala. It has a straw on the inside, but it’s not like a Stanley straw. You can sip using the mouth piece and the straw or just drink out of it like a water bottle with no straw. The silicone pieces on the top are easily removable for cleaning.

Klean kanteen is great

Yeti makes some great bottles in that size and larger

I’ve had a stainless steel Yeti water bottle for 10+ years. Goes with me everywhere. No dents, no paint to scratch or flake over time. It’s a beast.

I love the stainless steel water bottles from clean canteen. Get the ones with the stainless steel top as well (some of their models have plastic tops).

Why are Stanley’s bad? I use a silicone straw.

hydroflask or larq?

Old Absolut vodka bottle

I doubt there are many, if any, glass bottles designed for this sort of activity. Glass is fragile. There's a reason they're all plastic and stainless.

I havent ever had any chemical taste from my nalgenes, neither my few year old ones, or my new ones.

Stainless steel does not leach into clean water. There is a good reason food/beverage processing equipment is made of stainless.

You could try emptying out a big bottle of sangria and using that. I think those are 2 or 3 liters

You think nalgenes have taste?

I was going to suggest a fucking coconut, but if you think nalgenes have a taste to them, you definitely will notice the coconut.

If you can’t find a water bottle that doesn’t leave a funny taste, maybe your mouth is the problem. I’m not a mouth doctor or anything, but I know all the water I drink from my Platypus bladders and Nalgenes taste fine.

Good luck finding a 2L glass bottle. I couldn’t imagine carrying something like that!

Can’t beat a Nalgene!

Crank on a Nalgene lid a bit and you're good.

Owala

My Nalgene doesn’t leak.